PCalc Update Adds The Ability To Create Conversions and Functions

PCalc has been updated with new features and fixes, including the ability for users to create and share their own conversions and functions with a built-in editor. Also, user conversions and functions are automatically synced across multiple devices with the use of iCloud. It's great to see such a venerable app continue to get updates like this.

Updated built-in scientific constants to 2010 values from CODATA.
Added an option to show the live result of the last function used on a line of the display.
Fixed a problem drawing the ticker tape with custom display colours.
Fixed a problem editing user constants in landscape mode.
Fixed a problem with thousands separators not appearing when you copy or email the tape.
Fixed a problem with the engineering display mode.
Fixed a problem with external hardware keyboards input not working.
Fixed a problem starting up on an upside down iPad.